NET WORKS WORKSHEET 1
My job is to do questions 7-9.
QUESTION 7 Computers connected to a network are required to have a network interface card (NIC).What is the purpose of a NIC? The purpose of a Network Interface Card (NIC) is to provide your computer with a physical connection to a network. Almost all new computers come with a pre-installed NIC.
QUESTION 8 The following transmission media can be used to enable computers to communicate with each other. ·Twisted pair cable (shielded and unshielded) ·Coaxial cable ·Fibre optic Describe each type of transmission media and provide an example of the situation in which it would best be used.
Twisted pair cable (shielded and unshielded)
A type of cable that consists of two independently insulated wires twisted around one another. The use of two wires twisted together helps to reduce crosstalk and electromagnetic induction. Coaxial cable
A type of wire that consists of a center wire surrounded by insulation and then a grounded shield of braided wire. The shield minimizes electrical and radio frequency interference.
Fibre optic
Fibre optics use glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.
QUESTION 9 In the area of data transmission, what do the following terms mean? ·Bandwidth
The amount of data that can be transmitted in a fixed amount of time. ·Baseband
A type of data transmission in which digital or analog data is sent over a single unmultiplexed channel ·Broadband
A type of data transmission in which a single medium (wire) can carry several channels at once. ·Simplex
Refers to transmission in only one direction. ·Half-duplex
Refers to the transmission of data in just one direction at a time. For example, a walkie-talkie is a half-duplex device because only one personcan talk at a time. ·Duplex
Refers to the transmission of data in two directions simultaneously. For example, a telephone is a full-duplex device because both people can talk at once.
QUESTION 10
What is the function of the following pieces of network hardware commonly used in LAN’s? ·Hub A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. ·Repeater
A network device used to regenerate or replicate a signal. ·Router
A device that forwards data packets along networks. ·Bridge
A device that connects two LAN's ·Gateway
A node on a network that serves as an entrance to another network. ·Switch
a device that filters and forwards packets between LAN segments
TASK 3 A)You would need a router and cords to connect all of the computers. B)I would recommend a ring topology because there isn’t a “central” computer and the ring connects them all to each other. C)
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NET WORKS WORKSHEET 1
My job is to do questions 7-9.
QUESTION 7
Computers connected to a network are required to have a network interface card (NIC). What is the purpose of a NIC?
The purpose of a Network Interface Card (NIC) is to provide your computer with a physical connection to a network. Almost all new computers come with a pre-installed NIC.
QUESTION 8
The following transmission media can be used to enable computers to communicate with each other.
· Twisted pair cable (shielded and unshielded)
· Coaxial cable
· Fibre optic
Describe each type of transmission media and provide an example of the situation in which it would best be used.
Twisted pair cable (shielded and unshielded)
A type of cable that consists of two independently insulated wires twisted around one another. The use of two wires twisted together helps to reduce crosstalk and electromagnetic induction.
Coaxial cable
A type of wire that consists of a center wire surrounded by insulation and then a grounded shield of braided wire. The shield minimizes electrical and radio frequency interference.
Fibre optic
Fibre optics use glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.
QUESTION 9
In the area of data transmission, what do the following terms mean?
· Bandwidth
The amount of data that can be transmitted in a fixed amount of time.
· Baseband
A type of data transmission in which digital or analog data is sent over a single unmultiplexed channel
· Broadband
A type of data transmission in which a single medium (wire) can carry several channels at once.
· Simplex
Refers to transmission in only one direction.
· Half-duplex
Refers to the transmission of data in just one direction at a time. For example, a walkie-talkie is a half-duplex device because only one personcan talk at a time.
· Duplex
Refers to the transmission of data in two directions simultaneously. For example, a telephone is a full-duplex device because both people can talk at once.
QUESTION 10
What is the function of the following pieces of network hardware commonly used in LAN’s?
· Hub
A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN.
· Repeater
A network device used to regenerate or replicate a signal.
· Router
A device that forwards data packets along networks.
· Bridge
A device that connects two LAN's
· Gateway
A node on a network that serves as an entrance to another network.
· Switch
a device that filters and forwards packets between LAN segments
TASK 3
A) You would need a router and cords to connect all of the computers.
B) I would recommend a ring topology because there isn’t a “central” computer and the ring connects them all to each other.
C)
TASK 4
Architecture and hardware 2